| Acronym | Meaning |
 | LPC | Large Particle Count |
| DAI | Data Assimilation Initiative |
| PIREPS | Pilot Reports |
| EXPRESSO | EXPeriment For REgional Sources And Sinks Of Oxidants |
| ACEP | DOC Advisory Committee |
| IRMS | Isotope Ratio Mass Spectrometer |
| (C3) | Command |
| EOR | Emergency Operations Center |
| UNESCO | United Nations Educational |
| HVPS | High-volume Precipitation Spectrometer |
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